Adding full initial version of delay estimation functionality in echo canceller 3

webrtc/modules/audio_processing/aec3/echo_canceller3_unittest.cc

 /*
  *  Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 701 matching lines @@
 TEST(EchoCanceller3InputCheck, NullCaptureAnalysisParameter) {
   EXPECT_DEATH(EchoCanceller3(8000, false).AnalyzeCapture(nullptr), "");
 }
 
 // Verifiers that the verification for null input to the capture processing api
 // call works.
 TEST(EchoCanceller3InputCheck, NullCaptureProcessingParameter) {
   EXPECT_DEATH(EchoCanceller3(8000, false).ProcessCapture(nullptr, false), "");
 }
 
+// Verifies the check for correct sample rate.
+TEST(EchoCanceller3InputCheck, WrongSampleRate) {
+  ApmDataDumper data_dumper(0);
+  EXPECT_DEATH(EchoCanceller3(8001, false), "");
+}
+
 #endif
 
 }  // namespace webrtc